/Engine/Source/Developer/SourceControl/Public/ISourceControlProvider.h
Returns the list of available changelists if the underlying source control supports the 'changelist' concept.
[TArray](API\Runtime\Core\Containers\TArray)< [FSourceControlChangelistRef](API\Developer\SourceControl\FSourceControlChangelistRef) > GetChangelists ( [EStateCacheUsage::Type](API\Developer\SourceControl\EStateCacheUsage__Type) InStateCacheUsage )